4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
12 select HAVE_IRQ_EXIT_ON_IRQ_STACK
14 select HAVE_PERF_EVENTS
15 select PERF_USE_VMALLOC
17 select HAVE_ARCH_MMAP_RND_BITS if MMU
18 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
19 select HAVE_ARCH_SECCOMP_FILTER
20 select HAVE_ARCH_TRACEHOOK
21 select HAVE_CBPF_JIT if !CPU_MICROMIPS
22 select HAVE_FUNCTION_TRACER
23 select HAVE_DYNAMIC_FTRACE
24 select HAVE_FTRACE_MCOUNT_RECORD
25 select HAVE_C_RECORDMCOUNT
26 select HAVE_FUNCTION_GRAPH_TRACER
28 select HAVE_KRETPROBES
29 select HAVE_SYSCALL_TRACEPOINTS
30 select HAVE_DEBUG_KMEMLEAK
31 select HAVE_SYSCALL_TRACEPOINTS
32 select ARCH_HAS_ELF_RANDOMIZE
33 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
34 select RTC_LIB if !MACH_LOONGSON64
35 select GENERIC_ATOMIC64 if !64BIT
36 select HAVE_DMA_CONTIGUOUS
37 select HAVE_DMA_API_DEBUG
38 select GENERIC_IRQ_PROBE
39 select GENERIC_IRQ_SHOW
40 select GENERIC_PCI_IOMAP
41 select HAVE_ARCH_JUMP_LABEL
42 select ARCH_WANT_IPC_PARSE_VERSION
43 select IRQ_FORCED_THREADING
45 select HAVE_MEMBLOCK_NODE_MAP
46 select ARCH_DISCARD_MEMBLOCK
47 select GENERIC_SMP_IDLE_THREAD
48 select BUILDTIME_EXTABLE_SORT
49 select GENERIC_CPU_AUTOPROBE
50 select GENERIC_CLOCKEVENTS
51 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
52 select GENERIC_CMOS_UPDATE
53 select HAVE_MOD_ARCH_SPECIFIC
56 select MODULES_USE_ELF_REL if MODULES
57 select MODULES_USE_ELF_RELA if MODULES && 64BIT
58 select CLONE_BACKWARDS
59 select HAVE_DEBUG_STACKOVERFLOW
60 select HAVE_CC_STACKPROTECTOR
61 select CPU_PM if CPU_IDLE
62 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
63 select ARCH_BINFMT_ELF_STATE
64 select SYSCTL_EXCEPTION_TRACE
65 select HAVE_VIRT_CPU_ACCOUNTING_GEN
66 select HAVE_IRQ_TIME_ACCOUNTING
67 select GENERIC_TIME_VSYSCALL
68 select ARCH_CLOCKSOURCE_DATA
69 select HANDLE_DOMAIN_IRQ
70 select HAVE_EXIT_THREAD
71 select HAVE_REGS_AND_STACK_ACCESS_API
72 select HAVE_COPY_THREAD_TLS
74 menu "Machine selection"
81 bool "Generic board-agnostic MIPS kernel"
85 select CLKSRC_MIPS_GIC
87 select CPU_MIPSR2_IRQ_VI
88 select CPU_MIPSR2_IRQ_EI
90 select DMA_PERDEV_COHERENT
94 select MIPS_CPU_SCACHE
96 select MIPS_L1_CACHE_SHIFT_7
98 select PCI_DRIVERS_GENERIC
102 select SYS_HAS_CPU_MIPS32_R1
103 select SYS_HAS_CPU_MIPS32_R2
104 select SYS_HAS_CPU_MIPS32_R6
105 select SYS_HAS_CPU_MIPS64_R1
106 select SYS_HAS_CPU_MIPS64_R2
107 select SYS_HAS_CPU_MIPS64_R6
108 select SYS_SUPPORTS_32BIT_KERNEL
109 select SYS_SUPPORTS_64BIT_KERNEL
110 select SYS_SUPPORTS_BIG_ENDIAN
111 select SYS_SUPPORTS_HIGHMEM
112 select SYS_SUPPORTS_LITTLE_ENDIAN
113 select SYS_SUPPORTS_MICROMIPS
114 select SYS_SUPPORTS_MIPS_CPS
115 select SYS_SUPPORTS_MIPS16
116 select SYS_SUPPORTS_MULTITHREADING
117 select SYS_SUPPORTS_RELOCATABLE
118 select SYS_SUPPORTS_SMARTMIPS
119 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
120 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
121 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
122 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
123 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
124 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
127 Select this to build a kernel which aims to support multiple boards,
128 generally using a flattened device tree passed from the bootloader
129 using the boot protocol defined in the UHI (Unified Hosting
130 Interface) specification.
133 bool "Alchemy processor based machines"
134 select ARCH_PHYS_ADDR_T_64BIT
138 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
139 select SYS_HAS_CPU_MIPS32_R1
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_APM_EMULATION
143 select SYS_SUPPORTS_ZBOOT
147 bool "Texas Instruments AR7"
149 select DMA_NONCOHERENT
153 select NO_EXCEPT_FILL
155 select SYS_HAS_CPU_MIPS32_R1
156 select SYS_HAS_EARLY_PRINTK
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_LITTLE_ENDIAN
159 select SYS_SUPPORTS_MIPS16
160 select SYS_SUPPORTS_ZBOOT_UART16550
165 Support for the Texas Instruments AR7 System-on-a-Chip
166 family: TNETD7100, 7200 and 7300.
169 bool "Atheros AR231x/AR531x SoC support"
172 select DMA_NONCOHERENT
175 select SYS_HAS_CPU_MIPS32_R1
176 select SYS_SUPPORTS_BIG_ENDIAN
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_HAS_EARLY_PRINTK
180 Support for Atheros AR231x and Atheros AR531x based boards
183 bool "Atheros AR71XX/AR724X/AR913X based boards"
184 select ARCH_HAS_RESET_CONTROLLER
188 select DMA_NONCOHERENT
195 select SYS_HAS_CPU_MIPS32_R2
196 select SYS_HAS_EARLY_PRINTK
197 select SYS_SUPPORTS_32BIT_KERNEL
198 select SYS_SUPPORTS_BIG_ENDIAN
199 select SYS_SUPPORTS_MIPS16
200 select SYS_SUPPORTS_ZBOOT_UART_PROM
203 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
206 bool "Broadcom Generic BMIPS kernel"
208 select NO_EXCEPT_FILL
214 select BCM6345_L1_IRQ
215 select BCM7038_L1_IRQ
216 select BCM7120_L2_IRQ
217 select BRCMSTB_L2_IRQ
219 select DMA_NONCOHERENT
220 select SYS_SUPPORTS_32BIT_KERNEL
221 select SYS_SUPPORTS_LITTLE_ENDIAN
222 select SYS_SUPPORTS_BIG_ENDIAN
223 select SYS_SUPPORTS_HIGHMEM
224 select SYS_HAS_CPU_BMIPS32_3300
225 select SYS_HAS_CPU_BMIPS4350
226 select SYS_HAS_CPU_BMIPS4380
227 select SYS_HAS_CPU_BMIPS5000
229 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
230 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
231 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
232 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
234 Build a generic DT-based kernel image that boots on select
235 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
236 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
237 must be set appropriately for your board.
240 bool "Broadcom BCM47XX based boards"
244 select DMA_NONCOHERENT
247 select SYS_HAS_CPU_MIPS32_R1
248 select NO_EXCEPT_FILL
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_LITTLE_ENDIAN
251 select SYS_SUPPORTS_MIPS16
252 select SYS_HAS_EARLY_PRINTK
253 select USE_GENERIC_EARLY_PRINTK_8250
255 select LEDS_GPIO_REGISTER
259 Support for BCM47XX based boards
262 bool "Broadcom BCM63XX based boards"
267 select DMA_NONCOHERENT
269 select SYS_SUPPORTS_32BIT_KERNEL
270 select SYS_SUPPORTS_BIG_ENDIAN
271 select SYS_HAS_EARLY_PRINTK
275 select MIPS_L1_CACHE_SHIFT_4
277 Support for BCM63XX based boards
284 select DMA_NONCOHERENT
290 select PCI_GT64XXX_PCI0
292 select SYS_HAS_CPU_NEVADA
293 select SYS_HAS_EARLY_PRINTK
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_LITTLE_ENDIAN
297 select USE_GENERIC_EARLY_PRINTK_8250
299 config MACH_DECSTATION
303 select CEVT_R4K if CPU_R4X00
305 select CSRC_R4K if CPU_R4X00
306 select CPU_DADDI_WORKAROUNDS if 64BIT
307 select CPU_R4000_WORKAROUNDS if 64BIT
308 select CPU_R4400_WORKAROUNDS if 64BIT
309 select DMA_NONCOHERENT
312 select SYS_HAS_CPU_R3000
313 select SYS_HAS_CPU_R4X00
314 select SYS_SUPPORTS_32BIT_KERNEL
315 select SYS_SUPPORTS_64BIT_KERNEL
316 select SYS_SUPPORTS_LITTLE_ENDIAN
317 select SYS_SUPPORTS_128HZ
318 select SYS_SUPPORTS_256HZ
319 select SYS_SUPPORTS_1024HZ
320 select MIPS_L1_CACHE_SHIFT_4
322 This enables support for DEC's MIPS based workstations. For details
323 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
324 DECstation porting pages on <http://decstation.unix-ag.org/>.
326 If you have one of the following DECstation Models you definitely
327 want to choose R4xx0 for the CPU Type:
334 otherwise choose R3000.
337 bool "Jazz family of machines"
340 select ARCH_MAY_HAVE_PC_FDC
343 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
344 select GENERIC_ISA_DMA
345 select HAVE_PCSPKR_PLATFORM
350 select SYS_HAS_CPU_R4X00
351 select SYS_SUPPORTS_32BIT_KERNEL
352 select SYS_SUPPORTS_64BIT_KERNEL
353 select SYS_SUPPORTS_100HZ
355 This a family of machines based on the MIPS R4030 chipset which was
356 used by several vendors to build RISC/os and Windows NT workstations.
357 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
358 Olivetti M700-10 workstations.
361 bool "Ingenic SoC based machines"
362 select SYS_SUPPORTS_32BIT_KERNEL
363 select SYS_SUPPORTS_LITTLE_ENDIAN
364 select SYS_SUPPORTS_ZBOOT_UART16550
365 select DMA_NONCOHERENT
370 select GENERIC_IRQ_CHIP
376 bool "Lantiq based platforms"
377 select DMA_NONCOHERENT
381 select SYS_HAS_CPU_MIPS32_R1
382 select SYS_HAS_CPU_MIPS32_R2
383 select SYS_SUPPORTS_BIG_ENDIAN
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_MIPS16
386 select SYS_SUPPORTS_MULTITHREADING
387 select SYS_HAS_EARLY_PRINTK
394 select PINCTRL_LANTIQ
395 select ARCH_HAS_RESET_CONTROLLER
396 select RESET_CONTROLLER
399 bool "LASAT Networks platforms"
403 select DMA_NONCOHERENT
404 select SYS_HAS_EARLY_PRINTK
407 select PCI_GT64XXX_PCI0
409 select R5000_CPU_SCACHE
410 select SYS_HAS_CPU_R5000
411 select SYS_SUPPORTS_32BIT_KERNEL
412 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
413 select SYS_SUPPORTS_LITTLE_ENDIAN
415 config MACH_LOONGSON32
416 bool "Loongson-1 family of machines"
417 select SYS_SUPPORTS_ZBOOT
419 This enables support for the Loongson-1 family of machines.
421 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
422 the Institute of Computing Technology (ICT), Chinese Academy of
425 config MACH_LOONGSON64
426 bool "Loongson-2/3 family of machines"
427 select SYS_SUPPORTS_ZBOOT
429 This enables the support of Loongson-2/3 family of machines.
431 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
432 family of multi-core CPUs. They are both 64-bit general-purpose
433 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
434 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
435 in the People's Republic of China. The chief architect is Professor
438 config MACH_PISTACHIO
439 bool "IMG Pistachio SoC based boards"
443 select CLKSRC_MIPS_GIC
446 select DMA_NONCOHERENT
451 select MIPS_CPU_SCACHE
455 select SYS_HAS_CPU_MIPS32_R2
456 select SYS_SUPPORTS_32BIT_KERNEL
457 select SYS_SUPPORTS_LITTLE_ENDIAN
458 select SYS_SUPPORTS_MIPS_CPS
459 select SYS_SUPPORTS_MULTITHREADING
460 select SYS_SUPPORTS_RELOCATABLE
461 select SYS_SUPPORTS_ZBOOT
462 select SYS_HAS_EARLY_PRINTK
463 select USE_GENERIC_EARLY_PRINTK_8250
466 This enables support for the IMG Pistachio SoC platform.
469 bool "MIPSfpga Xilinx based boards"
479 select MIPS_CPU_SCACHE
480 select SYS_HAS_EARLY_PRINTK
481 select SYS_HAS_CPU_MIPS32_R2
482 select SYS_SUPPORTS_32BIT_KERNEL
483 select SYS_SUPPORTS_LITTLE_ENDIAN
484 select SYS_SUPPORTS_ZBOOT_UART16550
486 select USE_GENERIC_EARLY_PRINTK_8250
489 This enables support for the IMG University Program MIPSfpga platform.
492 bool "MIPS Malta board"
493 select ARCH_MAY_HAVE_PC_FDC
499 select CLKSRC_MIPS_GIC
501 select DMA_MAYBE_COHERENT
502 select GENERIC_ISA_DMA
503 select HAVE_PCSPKR_PLATFORM
510 select MIPS_CPU_SCACHE
511 select MIPS_L1_CACHE_SHIFT_6
512 select PCI_GT64XXX_PCI0
516 select SYS_HAS_CPU_MIPS32_R1
517 select SYS_HAS_CPU_MIPS32_R2
518 select SYS_HAS_CPU_MIPS32_R3_5
519 select SYS_HAS_CPU_MIPS32_R5
520 select SYS_HAS_CPU_MIPS32_R6
521 select SYS_HAS_CPU_MIPS64_R1
522 select SYS_HAS_CPU_MIPS64_R2
523 select SYS_HAS_CPU_MIPS64_R6
524 select SYS_HAS_CPU_NEVADA
525 select SYS_HAS_CPU_RM7000
526 select SYS_SUPPORTS_32BIT_KERNEL
527 select SYS_SUPPORTS_64BIT_KERNEL
528 select SYS_SUPPORTS_BIG_ENDIAN
529 select SYS_SUPPORTS_HIGHMEM
530 select SYS_SUPPORTS_LITTLE_ENDIAN
531 select SYS_SUPPORTS_MICROMIPS
532 select SYS_SUPPORTS_MIPS_CMP
533 select SYS_SUPPORTS_MIPS_CPS
534 select SYS_SUPPORTS_MIPS16
535 select SYS_SUPPORTS_MULTITHREADING
536 select SYS_SUPPORTS_SMARTMIPS
537 select SYS_SUPPORTS_ZBOOT
538 select SYS_SUPPORTS_RELOCATABLE
541 select ZONE_DMA32 if 64BIT
545 This enables support for the MIPS Technologies Malta evaluation
549 bool "Microchip PIC32 Family"
551 This enables support for the Microchip PIC32 family of platforms.
553 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
557 bool "NEC EMMA2RH Mark-eins board"
561 This enables support for the NEC Electronics Mark-eins boards.
564 bool "NEC VR4100 series based machines"
567 select SYS_HAS_CPU_VR41XX
568 select SYS_SUPPORTS_MIPS16
572 bool "NXP STB220 board"
575 Support for NXP Semiconductors STB220 Development Board.
582 Support for NXP Semiconductors STB225 Development Board.
585 bool "PMC-Sierra MSP chipsets"
588 select DMA_NONCOHERENT
590 select NO_EXCEPT_FILL
592 select SYS_HAS_CPU_MIPS32_R1
593 select SYS_HAS_CPU_MIPS32_R2
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_MIPS16
599 select SERIAL_8250_CONSOLE
600 select USB_EHCI_BIG_ENDIAN_MMIO
601 select USB_EHCI_BIG_ENDIAN_DESC
603 This adds support for the PMC-Sierra family of Multi-Service
604 Processor System-On-A-Chips. These parts include a number
605 of integrated peripherals, interfaces and DSPs in addition to
606 a variety of MIPS cores.
609 bool "Ralink based machines"
613 select DMA_NONCOHERENT
616 select SYS_HAS_CPU_MIPS32_R1
617 select SYS_HAS_CPU_MIPS32_R2
618 select SYS_SUPPORTS_32BIT_KERNEL
619 select SYS_SUPPORTS_LITTLE_ENDIAN
620 select SYS_SUPPORTS_MIPS16
621 select SYS_HAS_EARLY_PRINTK
623 select ARCH_HAS_RESET_CONTROLLER
624 select RESET_CONTROLLER
627 bool "SGI IP22 (Indy/Indigo2)"
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
638 select IP22_CPU_SCACHE
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
642 select SGI_HAS_INDYDOG
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
651 # Disable EARLY_PRINTK for now since it leads to overwritten prom
652 # memory during early boot on some machines.
654 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
655 # for a more details discussion
657 # select SYS_HAS_EARLY_PRINTK
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select MIPS_L1_CACHE_SHIFT_7
663 This are the SGI Indy, Challenge S and Indigo2, as well as certain
664 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
665 that runs on these, say Y here.
668 bool "SGI IP27 (Origin200/2000)"
672 select DEFAULT_SGI_PARTITION
674 select SYS_HAS_EARLY_PRINTK
676 select NR_CPUS_DEFAULT_64
677 select SYS_HAS_CPU_R10000
678 select SYS_SUPPORTS_64BIT_KERNEL
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_NUMA
681 select SYS_SUPPORTS_SMP
682 select MIPS_L1_CACHE_SHIFT_7
684 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
685 workstations. To compile a Linux kernel that runs on these, say Y
689 bool "SGI IP28 (Indigo2 R10k)"
695 select DEFAULT_SGI_PARTITION
696 select DMA_NONCOHERENT
697 select GENERIC_ISA_DMA_SUPPORT_BROKEN
703 select SGI_HAS_INDYDOG
709 select SYS_HAS_CPU_R10000
711 # Disable EARLY_PRINTK for now since it leads to overwritten prom
712 # memory during early boot on some machines.
714 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
715 # for a more details discussion
717 # select SYS_HAS_EARLY_PRINTK
718 select SYS_SUPPORTS_64BIT_KERNEL
719 select SYS_SUPPORTS_BIG_ENDIAN
720 select MIPS_L1_CACHE_SHIFT_7
722 This is the SGI Indigo2 with R10000 processor. To compile a Linux
723 kernel that runs on these, say Y here.
732 select DMA_NONCOHERENT
735 select R5000_CPU_SCACHE
736 select RM7000_CPU_SCACHE
737 select SYS_HAS_CPU_R5000
738 select SYS_HAS_CPU_R10000 if BROKEN
739 select SYS_HAS_CPU_RM7000
740 select SYS_HAS_CPU_NEVADA
741 select SYS_SUPPORTS_64BIT_KERNEL
742 select SYS_SUPPORTS_BIG_ENDIAN
744 If you want this kernel to run on SGI O2 workstation, say Y here.
747 bool "Sibyte BCM91120C-CRhine"
750 select SIBYTE_BCM1120
752 select SYS_HAS_CPU_SB1
753 select SYS_SUPPORTS_BIG_ENDIAN
754 select SYS_SUPPORTS_LITTLE_ENDIAN
757 bool "Sibyte BCM91120x-Carmel"
760 select SIBYTE_BCM1120
762 select SYS_HAS_CPU_SB1
763 select SYS_SUPPORTS_BIG_ENDIAN
764 select SYS_SUPPORTS_LITTLE_ENDIAN
767 bool "Sibyte BCM91125C-CRhone"
770 select SIBYTE_BCM1125
772 select SYS_HAS_CPU_SB1
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
775 select SYS_SUPPORTS_LITTLE_ENDIAN
778 bool "Sibyte BCM91125E-Rhone"
781 select SIBYTE_BCM1125H
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_LITTLE_ENDIAN
788 bool "Sibyte BCM91250A-SWARM"
791 select HAVE_PATA_PLATFORM
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_HIGHMEM
797 select SYS_SUPPORTS_LITTLE_ENDIAN
798 select ZONE_DMA32 if 64BIT
800 config SIBYTE_LITTLESUR
801 bool "Sibyte BCM91250C2-LittleSur"
804 select HAVE_PATA_PLATFORM
807 select SYS_HAS_CPU_SB1
808 select SYS_SUPPORTS_BIG_ENDIAN
809 select SYS_SUPPORTS_HIGHMEM
810 select SYS_SUPPORTS_LITTLE_ENDIAN
812 config SIBYTE_SENTOSA
813 bool "Sibyte BCM91250E-Sentosa"
818 select SYS_HAS_CPU_SB1
819 select SYS_SUPPORTS_BIG_ENDIAN
820 select SYS_SUPPORTS_LITTLE_ENDIAN
823 bool "Sibyte BCM91480B-BigSur"
826 select NR_CPUS_DEFAULT_4
827 select SIBYTE_BCM1x80
829 select SYS_HAS_CPU_SB1
830 select SYS_SUPPORTS_BIG_ENDIAN
831 select SYS_SUPPORTS_HIGHMEM
832 select SYS_SUPPORTS_LITTLE_ENDIAN
833 select ZONE_DMA32 if 64BIT
836 bool "SNI RM200/300/400"
837 select FW_ARC if CPU_LITTLE_ENDIAN
838 select FW_ARC32 if CPU_LITTLE_ENDIAN
839 select FW_SNIPROM if CPU_BIG_ENDIAN
840 select ARCH_MAY_HAVE_PC_FDC
844 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
845 select DMA_NONCOHERENT
846 select GENERIC_ISA_DMA
847 select HAVE_PCSPKR_PLATFORM
854 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
855 select SYS_HAS_CPU_R4X00
856 select SYS_HAS_CPU_R5000
857 select SYS_HAS_CPU_R10000
858 select R5000_CPU_SCACHE
859 select SYS_HAS_EARLY_PRINTK
860 select SYS_SUPPORTS_32BIT_KERNEL
861 select SYS_SUPPORTS_64BIT_KERNEL
862 select SYS_SUPPORTS_BIG_ENDIAN
863 select SYS_SUPPORTS_HIGHMEM
864 select SYS_SUPPORTS_LITTLE_ENDIAN
866 The SNI RM200/300/400 are MIPS-based machines manufactured by
867 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
868 Technology and now in turn merged with Fujitsu. Say Y here to
869 support this machine type.
872 bool "Toshiba TX39 series based machines"
875 bool "Toshiba TX49 series based machines"
877 config MIKROTIK_RB532
878 bool "Mikrotik RB532 boards"
881 select DMA_NONCOHERENT
884 select SYS_HAS_CPU_MIPS32_R1
885 select SYS_SUPPORTS_32BIT_KERNEL
886 select SYS_SUPPORTS_LITTLE_ENDIAN
890 select MIPS_L1_CACHE_SHIFT_4
892 Support the Mikrotik(tm) RouterBoard 532 series,
893 based on the IDT RC32434 SoC.
895 config CAVIUM_OCTEON_SOC
896 bool "Cavium Networks Octeon SoC based boards"
898 select ARCH_PHYS_ADDR_T_64BIT
900 select SYS_SUPPORTS_64BIT_KERNEL
901 select SYS_SUPPORTS_BIG_ENDIAN
903 select EDAC_ATOMIC_SCRUB
904 select SYS_SUPPORTS_LITTLE_ENDIAN
905 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
906 select SYS_HAS_EARLY_PRINTK
907 select SYS_HAS_CPU_CAVIUM_OCTEON
914 select ARCH_SPARSEMEM_ENABLE
915 select SYS_SUPPORTS_SMP
916 select NR_CPUS_DEFAULT_16
918 select MTD_COMPLEX_MAPPINGS
919 select SYS_SUPPORTS_RELOCATABLE
921 This option supports all of the Octeon reference boards from Cavium
922 Networks. It builds a kernel that dynamically determines the Octeon
923 CPU type and supports all known board reference implementations.
924 Some of the supported boards are:
931 Say Y here for most Octeon reference boards.
934 bool "Netlogic XLR/XLS based systems"
937 select SYS_HAS_CPU_XLR
938 select SYS_SUPPORTS_SMP
941 select SYS_SUPPORTS_32BIT_KERNEL
942 select SYS_SUPPORTS_64BIT_KERNEL
943 select ARCH_PHYS_ADDR_T_64BIT
944 select SYS_SUPPORTS_BIG_ENDIAN
945 select SYS_SUPPORTS_HIGHMEM
947 select NR_CPUS_DEFAULT_32
951 select ZONE_DMA32 if 64BIT
953 select SYS_HAS_EARLY_PRINTK
954 select SYS_SUPPORTS_ZBOOT
955 select SYS_SUPPORTS_ZBOOT_UART16550
957 Support for systems based on Netlogic XLR and XLS processors.
958 Say Y here if you have a XLR or XLS based board.
961 bool "Netlogic XLP based systems"
964 select SYS_HAS_CPU_XLP
965 select SYS_SUPPORTS_SMP
967 select SYS_SUPPORTS_32BIT_KERNEL
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select ARCH_PHYS_ADDR_T_64BIT
971 select SYS_SUPPORTS_BIG_ENDIAN
972 select SYS_SUPPORTS_LITTLE_ENDIAN
973 select SYS_SUPPORTS_HIGHMEM
975 select NR_CPUS_DEFAULT_32
979 select ZONE_DMA32 if 64BIT
981 select SYS_HAS_EARLY_PRINTK
983 select SYS_SUPPORTS_ZBOOT
984 select SYS_SUPPORTS_ZBOOT_UART16550
986 This board is based on Netlogic XLP Processor.
987 Say Y here if you have a XLP based board.
990 bool "Para-Virtualized guest system"
994 select SYS_SUPPORTS_64BIT_KERNEL
995 select SYS_SUPPORTS_32BIT_KERNEL
996 select SYS_SUPPORTS_BIG_ENDIAN
997 select SYS_SUPPORTS_SMP
998 select NR_CPUS_DEFAULT_4
999 select SYS_HAS_EARLY_PRINTK
1000 select SYS_HAS_CPU_MIPS32_R2
1001 select SYS_HAS_CPU_MIPS64_R2
1002 select SYS_HAS_CPU_CAVIUM_OCTEON
1004 select SWAP_IO_SPACE
1006 This option supports guest running under ????
1010 source "arch/mips/alchemy/Kconfig"
1011 source "arch/mips/ath25/Kconfig"
1012 source "arch/mips/ath79/Kconfig"
1013 source "arch/mips/bcm47xx/Kconfig"
1014 source "arch/mips/bcm63xx/Kconfig"
1015 source "arch/mips/bmips/Kconfig"
1016 source "arch/mips/generic/Kconfig"
1017 source "arch/mips/jazz/Kconfig"
1018 source "arch/mips/jz4740/Kconfig"
1019 source "arch/mips/lantiq/Kconfig"
1020 source "arch/mips/lasat/Kconfig"
1021 source "arch/mips/pic32/Kconfig"
1022 source "arch/mips/pistachio/Kconfig"
1023 source "arch/mips/pmcs-msp71xx/Kconfig"
1024 source "arch/mips/ralink/Kconfig"
1025 source "arch/mips/sgi-ip27/Kconfig"
1026 source "arch/mips/sibyte/Kconfig"
1027 source "arch/mips/txx9/Kconfig"
1028 source "arch/mips/vr41xx/Kconfig"
1029 source "arch/mips/cavium-octeon/Kconfig"
1030 source "arch/mips/loongson32/Kconfig"
1031 source "arch/mips/loongson64/Kconfig"
1032 source "arch/mips/netlogic/Kconfig"
1033 source "arch/mips/paravirt/Kconfig"
1034 source "arch/mips/xilfpga/Kconfig"
1038 config RWSEM_GENERIC_SPINLOCK
1042 config RWSEM_XCHGADD_ALGORITHM
1045 config GENERIC_HWEIGHT
1049 config GENERIC_CALIBRATE_DELAY
1053 config SCHED_OMIT_FRAME_POINTER
1058 # Select some configuration options automatically based on user selections.
1063 config ARCH_MAY_HAVE_PC_FDC
1099 config MIPS_CLOCK_VSYSCALL
1100 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1109 config ARCH_DMA_ADDR_T_64BIT
1110 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1112 config ARCH_SUPPORTS_UPROBES
1115 config DMA_MAYBE_COHERENT
1116 select DMA_NONCOHERENT
1119 config DMA_PERDEV_COHERENT
1121 select DMA_MAYBE_COHERENT
1126 config DMA_NONCOHERENT
1128 select NEED_DMA_MAP_STATE
1130 config NEED_DMA_MAP_STATE
1133 config SYS_HAS_EARLY_PRINTK
1136 config SYS_SUPPORTS_HOTPLUG_CPU
1139 config MIPS_BONITO64
1154 config NO_IOPORT_MAP
1160 config GENERIC_ISA_DMA
1162 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1165 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1167 select GENERIC_ISA_DMA
1172 config HOLES_IN_ZONE
1175 config SYS_SUPPORTS_RELOCATABLE
1178 Selected if the platform supports relocating the kernel.
1179 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1180 to allow access to command line and entropy sources.
1183 # Endianness selection. Sufficiently obscure so many users don't know what to
1184 # answer,so we try hard to limit the available choices. Also the use of a
1185 # choice statement should be more obvious to the user.
1188 prompt "Endianness selection"
1190 Some MIPS machines can be configured for either little or big endian
1191 byte order. These modes require different kernels and a different
1192 Linux distribution. In general there is one preferred byteorder for a
1193 particular system but some systems are just as commonly used in the
1194 one or the other endianness.
1196 config CPU_BIG_ENDIAN
1198 depends on SYS_SUPPORTS_BIG_ENDIAN
1200 config CPU_LITTLE_ENDIAN
1201 bool "Little endian"
1202 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1209 config SYS_SUPPORTS_APM_EMULATION
1212 config SYS_SUPPORTS_BIG_ENDIAN
1215 config SYS_SUPPORTS_LITTLE_ENDIAN
1218 config SYS_SUPPORTS_HUGETLBFS
1220 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1223 config MIPS_HUGE_TLB_SUPPORT
1224 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1241 config PCI_GT64XXX_PCI0
1244 config NO_EXCEPT_FILL
1251 select DMA_NONCOHERENT
1253 select SWAP_IO_SPACE
1254 select SYS_HAS_CPU_R5500
1255 select SYS_SUPPORTS_32BIT_KERNEL
1256 select SYS_SUPPORTS_64BIT_KERNEL
1257 select SYS_SUPPORTS_BIG_ENDIAN
1264 select DMA_NONCOHERENT
1265 select SYS_HAS_CPU_MIPS32_R2
1266 select SYS_SUPPORTS_32BIT_KERNEL
1267 select SYS_SUPPORTS_LITTLE_ENDIAN
1268 select SYS_SUPPORTS_BIG_ENDIAN
1269 select SYS_SUPPORTS_MIPS16
1270 select CPU_MIPSR2_IRQ_VI
1279 config SWAP_IO_SPACE
1282 config SGI_HAS_INDYDOG
1294 config SGI_HAS_ZILOG
1297 config SGI_HAS_I8042
1300 config DEFAULT_SGI_PARTITION
1312 config MIPS_L1_CACHE_SHIFT_4
1315 config MIPS_L1_CACHE_SHIFT_5
1318 config MIPS_L1_CACHE_SHIFT_6
1321 config MIPS_L1_CACHE_SHIFT_7
1324 config MIPS_L1_CACHE_SHIFT
1326 default "7" if MIPS_L1_CACHE_SHIFT_7
1327 default "6" if MIPS_L1_CACHE_SHIFT_6
1328 default "5" if MIPS_L1_CACHE_SHIFT_5
1329 default "4" if MIPS_L1_CACHE_SHIFT_4
1332 config HAVE_STD_PC_SERIAL_PORT
1336 bool "ARC console support"
1337 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1341 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1346 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1355 menu "CPU selection"
1361 config CPU_LOONGSON3
1362 bool "Loongson 3 CPU"
1363 depends on SYS_HAS_CPU_LOONGSON3
1364 select CPU_SUPPORTS_64BIT_KERNEL
1365 select CPU_SUPPORTS_HIGHMEM
1366 select CPU_SUPPORTS_HUGEPAGES
1367 select WEAK_ORDERING
1368 select WEAK_REORDERING_BEYOND_LLSC
1369 select MIPS_PGD_C0_CONTEXT
1370 select MIPS_L1_CACHE_SHIFT_6
1373 The Loongson 3 processor implements the MIPS64R2 instruction
1374 set with many extensions.
1376 config LOONGSON3_ENHANCEMENT
1377 bool "New Loongson 3 CPU Enhancements"
1380 select CPU_HAS_PREFETCH
1381 depends on CPU_LOONGSON3
1383 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1384 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1385 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1386 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1387 Fast TLB refill support, etc.
1389 This option enable those enhancements which are not probed at run
1390 time. If you want a generic kernel to run on all Loongson 3 machines,
1391 please say 'N' here. If you want a high-performance kernel to run on
1392 new Loongson 3 machines only, please say 'Y' here.
1394 config CPU_LOONGSON2E
1396 depends on SYS_HAS_CPU_LOONGSON2E
1397 select CPU_LOONGSON2
1399 The Loongson 2E processor implements the MIPS III instruction set
1400 with many extensions.
1402 It has an internal FPGA northbridge, which is compatible to
1405 config CPU_LOONGSON2F
1407 depends on SYS_HAS_CPU_LOONGSON2F
1408 select CPU_LOONGSON2
1411 The Loongson 2F processor implements the MIPS III instruction set
1412 with many extensions.
1414 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1415 have a similar programming interface with FPGA northbridge used in
1418 config CPU_LOONGSON1B
1420 depends on SYS_HAS_CPU_LOONGSON1B
1421 select CPU_LOONGSON1
1422 select LEDS_GPIO_REGISTER
1424 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1425 release 2 instruction set.
1427 config CPU_LOONGSON1C
1429 depends on SYS_HAS_CPU_LOONGSON1C
1430 select CPU_LOONGSON1
1431 select LEDS_GPIO_REGISTER
1433 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1434 release 2 instruction set.
1436 config CPU_MIPS32_R1
1437 bool "MIPS32 Release 1"
1438 depends on SYS_HAS_CPU_MIPS32_R1
1439 select CPU_HAS_PREFETCH
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_HIGHMEM
1443 Choose this option to build a kernel for release 1 or later of the
1444 MIPS32 architecture. Most modern embedded systems with a 32-bit
1445 MIPS processor are based on a MIPS32 processor. If you know the
1446 specific type of processor in your system, choose those that one
1447 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1448 Release 2 of the MIPS32 architecture is available since several
1449 years so chances are you even have a MIPS32 Release 2 processor
1450 in which case you should choose CPU_MIPS32_R2 instead for better
1453 config CPU_MIPS32_R2
1454 bool "MIPS32 Release 2"
1455 depends on SYS_HAS_CPU_MIPS32_R2
1456 select CPU_HAS_PREFETCH
1457 select CPU_SUPPORTS_32BIT_KERNEL
1458 select CPU_SUPPORTS_HIGHMEM
1459 select CPU_SUPPORTS_MSA
1462 Choose this option to build a kernel for release 2 or later of the
1463 MIPS32 architecture. Most modern embedded systems with a 32-bit
1464 MIPS processor are based on a MIPS32 processor. If you know the
1465 specific type of processor in your system, choose those that one
1466 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1468 config CPU_MIPS32_R6
1469 bool "MIPS32 Release 6"
1470 depends on SYS_HAS_CPU_MIPS32_R6
1471 select CPU_HAS_PREFETCH
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_MSA
1477 select MIPS_O32_FP64_SUPPORT
1479 Choose this option to build a kernel for release 6 or later of the
1480 MIPS32 architecture. New MIPS processors, starting with the Warrior
1481 family, are based on a MIPS32r6 processor. If you own an older
1482 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1484 config CPU_MIPS64_R1
1485 bool "MIPS64 Release 1"
1486 depends on SYS_HAS_CPU_MIPS64_R1
1487 select CPU_HAS_PREFETCH
1488 select CPU_SUPPORTS_32BIT_KERNEL
1489 select CPU_SUPPORTS_64BIT_KERNEL
1490 select CPU_SUPPORTS_HIGHMEM
1491 select CPU_SUPPORTS_HUGEPAGES
1493 Choose this option to build a kernel for release 1 or later of the
1494 MIPS64 architecture. Many modern embedded systems with a 64-bit
1495 MIPS processor are based on a MIPS64 processor. If you know the
1496 specific type of processor in your system, choose those that one
1497 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1498 Release 2 of the MIPS64 architecture is available since several
1499 years so chances are you even have a MIPS64 Release 2 processor
1500 in which case you should choose CPU_MIPS64_R2 instead for better
1503 config CPU_MIPS64_R2
1504 bool "MIPS64 Release 2"
1505 depends on SYS_HAS_CPU_MIPS64_R2
1506 select CPU_HAS_PREFETCH
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_64BIT_KERNEL
1509 select CPU_SUPPORTS_HIGHMEM
1510 select CPU_SUPPORTS_HUGEPAGES
1511 select CPU_SUPPORTS_MSA
1514 Choose this option to build a kernel for release 2 or later of the
1515 MIPS64 architecture. Many modern embedded systems with a 64-bit
1516 MIPS processor are based on a MIPS64 processor. If you know the
1517 specific type of processor in your system, choose those that one
1518 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1520 config CPU_MIPS64_R6
1521 bool "MIPS64 Release 6"
1522 depends on SYS_HAS_CPU_MIPS64_R6
1523 select CPU_HAS_PREFETCH
1524 select CPU_SUPPORTS_32BIT_KERNEL
1525 select CPU_SUPPORTS_64BIT_KERNEL
1526 select CPU_SUPPORTS_HIGHMEM
1527 select CPU_SUPPORTS_MSA
1529 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1532 Choose this option to build a kernel for release 6 or later of the
1533 MIPS64 architecture. New MIPS processors, starting with the Warrior
1534 family, are based on a MIPS64r6 processor. If you own an older
1535 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1539 depends on SYS_HAS_CPU_R3000
1541 select CPU_SUPPORTS_32BIT_KERNEL
1542 select CPU_SUPPORTS_HIGHMEM
1544 Please make sure to pick the right CPU type. Linux/MIPS is not
1545 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1546 *not* work on R4000 machines and vice versa. However, since most
1547 of the supported machines have an R4000 (or similar) CPU, R4x00
1548 might be a safe bet. If the resulting kernel does not work,
1549 try to recompile with R3000.
1553 depends on SYS_HAS_CPU_TX39XX
1554 select CPU_SUPPORTS_32BIT_KERNEL
1558 depends on SYS_HAS_CPU_VR41XX
1559 select CPU_SUPPORTS_32BIT_KERNEL
1560 select CPU_SUPPORTS_64BIT_KERNEL
1562 The options selects support for the NEC VR4100 series of processors.
1563 Only choose this option if you have one of these processors as a
1564 kernel built with this option will not run on any other type of
1565 processor or vice versa.
1569 depends on SYS_HAS_CPU_R4300
1570 select CPU_SUPPORTS_32BIT_KERNEL
1571 select CPU_SUPPORTS_64BIT_KERNEL
1573 MIPS Technologies R4300-series processors.
1577 depends on SYS_HAS_CPU_R4X00
1578 select CPU_SUPPORTS_32BIT_KERNEL
1579 select CPU_SUPPORTS_64BIT_KERNEL
1580 select CPU_SUPPORTS_HUGEPAGES
1582 MIPS Technologies R4000-series processors other than 4300, including
1583 the R4000, R4400, R4600, and 4700.
1587 depends on SYS_HAS_CPU_TX49XX
1588 select CPU_HAS_PREFETCH
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select CPU_SUPPORTS_64BIT_KERNEL
1591 select CPU_SUPPORTS_HUGEPAGES
1595 depends on SYS_HAS_CPU_R5000
1596 select CPU_SUPPORTS_32BIT_KERNEL
1597 select CPU_SUPPORTS_64BIT_KERNEL
1598 select CPU_SUPPORTS_HUGEPAGES
1600 MIPS Technologies R5000-series processors other than the Nevada.
1604 depends on SYS_HAS_CPU_R5432
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HUGEPAGES
1611 depends on SYS_HAS_CPU_R5500
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HUGEPAGES
1616 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1621 depends on SYS_HAS_CPU_R6000
1622 select CPU_SUPPORTS_32BIT_KERNEL
1624 MIPS Technologies R6000 and R6000A series processors. Note these
1625 processors are extremely rare and the support for them is incomplete.
1629 depends on SYS_HAS_CPU_NEVADA
1630 select CPU_SUPPORTS_32BIT_KERNEL
1631 select CPU_SUPPORTS_64BIT_KERNEL
1632 select CPU_SUPPORTS_HUGEPAGES
1634 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1638 depends on SYS_HAS_CPU_R8000
1639 select CPU_HAS_PREFETCH
1640 select CPU_SUPPORTS_64BIT_KERNEL
1642 MIPS Technologies R8000 processors. Note these processors are
1643 uncommon and the support for them is incomplete.
1647 depends on SYS_HAS_CPU_R10000
1648 select CPU_HAS_PREFETCH
1649 select CPU_SUPPORTS_32BIT_KERNEL
1650 select CPU_SUPPORTS_64BIT_KERNEL
1651 select CPU_SUPPORTS_HIGHMEM
1652 select CPU_SUPPORTS_HUGEPAGES
1654 MIPS Technologies R10000-series processors.
1658 depends on SYS_HAS_CPU_RM7000
1659 select CPU_HAS_PREFETCH
1660 select CPU_SUPPORTS_32BIT_KERNEL
1661 select CPU_SUPPORTS_64BIT_KERNEL
1662 select CPU_SUPPORTS_HIGHMEM
1663 select CPU_SUPPORTS_HUGEPAGES
1667 depends on SYS_HAS_CPU_SB1
1668 select CPU_SUPPORTS_32BIT_KERNEL
1669 select CPU_SUPPORTS_64BIT_KERNEL
1670 select CPU_SUPPORTS_HIGHMEM
1671 select CPU_SUPPORTS_HUGEPAGES
1672 select WEAK_ORDERING
1674 config CPU_CAVIUM_OCTEON
1675 bool "Cavium Octeon processor"
1676 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1677 select CPU_HAS_PREFETCH
1678 select CPU_SUPPORTS_64BIT_KERNEL
1679 select WEAK_ORDERING
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_HUGEPAGES
1682 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1683 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1684 select MIPS_L1_CACHE_SHIFT_7
1687 The Cavium Octeon processor is a highly integrated chip containing
1688 many ethernet hardware widgets for networking tasks. The processor
1689 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1690 Full details can be found at http://www.caviumnetworks.com.
1693 bool "Broadcom BMIPS"
1694 depends on SYS_HAS_CPU_BMIPS
1696 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1697 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1698 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1699 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select DMA_NONCOHERENT
1703 select SWAP_IO_SPACE
1704 select WEAK_ORDERING
1705 select CPU_SUPPORTS_HIGHMEM
1706 select CPU_HAS_PREFETCH
1707 select CPU_SUPPORTS_CPUFREQ
1708 select MIPS_EXTERNAL_TIMER
1710 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1713 bool "Netlogic XLR SoC"
1714 depends on SYS_HAS_CPU_XLR
1715 select CPU_SUPPORTS_32BIT_KERNEL
1716 select CPU_SUPPORTS_64BIT_KERNEL
1717 select CPU_SUPPORTS_HIGHMEM
1718 select CPU_SUPPORTS_HUGEPAGES
1719 select WEAK_ORDERING
1720 select WEAK_REORDERING_BEYOND_LLSC
1722 Netlogic Microsystems XLR/XLS processors.
1725 bool "Netlogic XLP SoC"
1726 depends on SYS_HAS_CPU_XLP
1727 select CPU_SUPPORTS_32BIT_KERNEL
1728 select CPU_SUPPORTS_64BIT_KERNEL
1729 select CPU_SUPPORTS_HIGHMEM
1730 select WEAK_ORDERING
1731 select WEAK_REORDERING_BEYOND_LLSC
1732 select CPU_HAS_PREFETCH
1734 select CPU_SUPPORTS_HUGEPAGES
1735 select MIPS_ASID_BITS_VARIABLE
1737 Netlogic Microsystems XLP processors.
1740 config CPU_MIPS32_3_5_FEATURES
1741 bool "MIPS32 Release 3.5 Features"
1742 depends on SYS_HAS_CPU_MIPS32_R3_5
1743 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1745 Choose this option to build a kernel for release 2 or later of the
1746 MIPS32 architecture including features from the 3.5 release such as
1747 support for Enhanced Virtual Addressing (EVA).
1749 config CPU_MIPS32_3_5_EVA
1750 bool "Enhanced Virtual Addressing (EVA)"
1751 depends on CPU_MIPS32_3_5_FEATURES
1755 Choose this option if you want to enable the Enhanced Virtual
1756 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1757 One of its primary benefits is an increase in the maximum size
1758 of lowmem (up to 3GB). If unsure, say 'N' here.
1760 config CPU_MIPS32_R5_FEATURES
1761 bool "MIPS32 Release 5 Features"
1762 depends on SYS_HAS_CPU_MIPS32_R5
1763 depends on CPU_MIPS32_R2
1765 Choose this option to build a kernel for release 2 or later of the
1766 MIPS32 architecture including features from release 5 such as
1767 support for Extended Physical Addressing (XPA).
1769 config CPU_MIPS32_R5_XPA
1770 bool "Extended Physical Addressing (XPA)"
1771 depends on CPU_MIPS32_R5_FEATURES
1773 depends on !PAGE_SIZE_4KB
1774 depends on SYS_SUPPORTS_HIGHMEM
1777 select ARCH_PHYS_ADDR_T_64BIT
1780 Choose this option if you want to enable the Extended Physical
1781 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1782 benefit is to increase physical addressing equal to or greater
1783 than 40 bits. Note that this has the side effect of turning on
1784 64-bit addressing which in turn makes the PTEs 64-bit in size.
1785 If unsure, say 'N' here.
1788 config CPU_NOP_WORKAROUNDS
1791 config CPU_JUMP_WORKAROUNDS
1794 config CPU_LOONGSON2F_WORKAROUNDS
1795 bool "Loongson 2F Workarounds"
1797 select CPU_NOP_WORKAROUNDS
1798 select CPU_JUMP_WORKAROUNDS
1800 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1801 require workarounds. Without workarounds the system may hang
1802 unexpectedly. For more information please refer to the gas
1803 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1805 Loongson 2F03 and later have fixed these issues and no workarounds
1806 are needed. The workarounds have no significant side effect on them
1807 but may decrease the performance of the system so this option should
1808 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1811 If unsure, please say Y.
1812 endif # CPU_LOONGSON2F
1814 config SYS_SUPPORTS_ZBOOT
1816 select HAVE_KERNEL_GZIP
1817 select HAVE_KERNEL_BZIP2
1818 select HAVE_KERNEL_LZ4
1819 select HAVE_KERNEL_LZMA
1820 select HAVE_KERNEL_LZO
1821 select HAVE_KERNEL_XZ
1823 config SYS_SUPPORTS_ZBOOT_UART16550
1825 select SYS_SUPPORTS_ZBOOT
1827 config SYS_SUPPORTS_ZBOOT_UART_PROM
1829 select SYS_SUPPORTS_ZBOOT
1831 config CPU_LOONGSON2
1833 select CPU_SUPPORTS_32BIT_KERNEL
1834 select CPU_SUPPORTS_64BIT_KERNEL
1835 select CPU_SUPPORTS_HIGHMEM
1836 select CPU_SUPPORTS_HUGEPAGES
1838 config CPU_LOONGSON1
1842 select CPU_HAS_PREFETCH
1843 select CPU_SUPPORTS_32BIT_KERNEL
1844 select CPU_SUPPORTS_HIGHMEM
1845 select CPU_SUPPORTS_CPUFREQ
1847 config CPU_BMIPS32_3300
1848 select SMP_UP if SMP
1851 config CPU_BMIPS4350
1853 select SYS_SUPPORTS_SMP
1854 select SYS_SUPPORTS_HOTPLUG_CPU
1856 config CPU_BMIPS4380
1858 select MIPS_L1_CACHE_SHIFT_6
1859 select SYS_SUPPORTS_SMP
1860 select SYS_SUPPORTS_HOTPLUG_CPU
1863 config CPU_BMIPS5000
1865 select MIPS_CPU_SCACHE
1866 select MIPS_L1_CACHE_SHIFT_7
1867 select SYS_SUPPORTS_SMP
1868 select SYS_SUPPORTS_HOTPLUG_CPU
1871 config SYS_HAS_CPU_LOONGSON3
1873 select CPU_SUPPORTS_CPUFREQ
1876 config SYS_HAS_CPU_LOONGSON2E
1879 config SYS_HAS_CPU_LOONGSON2F
1881 select CPU_SUPPORTS_CPUFREQ
1882 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1883 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1885 config SYS_HAS_CPU_LOONGSON1B
1888 config SYS_HAS_CPU_LOONGSON1C
1891 config SYS_HAS_CPU_MIPS32_R1
1894 config SYS_HAS_CPU_MIPS32_R2
1897 config SYS_HAS_CPU_MIPS32_R3_5
1900 config SYS_HAS_CPU_MIPS32_R5
1903 config SYS_HAS_CPU_MIPS32_R6
1906 config SYS_HAS_CPU_MIPS64_R1
1909 config SYS_HAS_CPU_MIPS64_R2
1912 config SYS_HAS_CPU_MIPS64_R6
1915 config SYS_HAS_CPU_R3000
1918 config SYS_HAS_CPU_TX39XX
1921 config SYS_HAS_CPU_VR41XX
1924 config SYS_HAS_CPU_R4300
1927 config SYS_HAS_CPU_R4X00
1930 config SYS_HAS_CPU_TX49XX
1933 config SYS_HAS_CPU_R5000
1936 config SYS_HAS_CPU_R5432
1939 config SYS_HAS_CPU_R5500
1942 config SYS_HAS_CPU_R6000
1945 config SYS_HAS_CPU_NEVADA
1948 config SYS_HAS_CPU_R8000
1951 config SYS_HAS_CPU_R10000
1954 config SYS_HAS_CPU_RM7000
1957 config SYS_HAS_CPU_SB1
1960 config SYS_HAS_CPU_CAVIUM_OCTEON
1963 config SYS_HAS_CPU_BMIPS
1966 config SYS_HAS_CPU_BMIPS32_3300
1968 select SYS_HAS_CPU_BMIPS
1970 config SYS_HAS_CPU_BMIPS4350
1972 select SYS_HAS_CPU_BMIPS
1974 config SYS_HAS_CPU_BMIPS4380
1976 select SYS_HAS_CPU_BMIPS
1978 config SYS_HAS_CPU_BMIPS5000
1980 select SYS_HAS_CPU_BMIPS
1982 config SYS_HAS_CPU_XLR
1985 config SYS_HAS_CPU_XLP
1988 config MIPS_MALTA_PM
1989 depends on MIPS_MALTA
1995 # CPU may reorder R->R, R->W, W->R, W->W
1996 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1998 config WEAK_ORDERING
2002 # CPU may reorder reads and writes beyond LL/SC
2003 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2005 config WEAK_REORDERING_BEYOND_LLSC
2010 # These two indicate any level of the MIPS32 and MIPS64 architecture
2014 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2018 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2021 # These two indicate the revision of the architecture, either Release 1 or Release 2
2025 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2029 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2035 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2037 select HAVE_ARCH_BITREVERSE
2038 select MIPS_ASID_BITS_VARIABLE
2047 config SYS_SUPPORTS_32BIT_KERNEL
2049 config SYS_SUPPORTS_64BIT_KERNEL
2051 config CPU_SUPPORTS_32BIT_KERNEL
2053 config CPU_SUPPORTS_64BIT_KERNEL
2055 config CPU_SUPPORTS_CPUFREQ
2057 config CPU_SUPPORTS_ADDRWINCFG
2059 config CPU_SUPPORTS_HUGEPAGES
2061 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2063 config MIPS_PGD_C0_CONTEXT
2065 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2068 # Set to y for ptrace access to watch registers.
2070 config HARDWARE_WATCHPOINTS
2072 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2077 prompt "Kernel code model"
2079 You should only select this option if you have a workload that
2080 actually benefits from 64-bit processing or if your machine has
2081 large memory. You will only be presented a single option in this
2082 menu if your system does not support both 32-bit and 64-bit kernels.
2085 bool "32-bit kernel"
2086 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2089 Select this option if you want to build a 32-bit kernel.
2092 bool "64-bit kernel"
2093 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2095 Select this option if you want to build a 64-bit kernel.
2100 bool "KVM Guest Kernel"
2101 depends on BROKEN_ON_SMP
2103 Select this option if building a guest kernel for KVM (Trap & Emulate)
2106 config KVM_GUEST_TIMER_FREQ
2107 int "Count/Compare Timer Frequency (MHz)"
2108 depends on KVM_GUEST
2111 Set this to non-zero if building a guest kernel for KVM to skip RTC
2112 emulation when determining guest CPU Frequency. Instead, the guest's
2113 timer frequency is specified directly.
2115 config MIPS_VA_BITS_48
2116 bool "48 bits virtual memory"
2119 Support a maximum at least 48 bits of application virtual
2120 memory. Default is 40 bits or less, depending on the CPU.
2121 For page sizes 16k and above, this option results in a small
2122 memory overhead for page tables. For 4k page size, a fourth
2123 level of page tables is added which imposes both a memory
2124 overhead as well as slower TLB fault handling.
2129 prompt "Kernel page size"
2130 default PAGE_SIZE_4KB
2132 config PAGE_SIZE_4KB
2134 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2136 This option select the standard 4kB Linux page size. On some
2137 R3000-family processors this is the only available page size. Using
2138 4kB page size will minimize memory consumption and is therefore
2139 recommended for low memory systems.
2141 config PAGE_SIZE_8KB
2143 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2144 depends on !MIPS_VA_BITS_48
2146 Using 8kB page size will result in higher performance kernel at
2147 the price of higher memory consumption. This option is available
2148 only on R8000 and cnMIPS processors. Note that you will need a
2149 suitable Linux distribution to support this.
2151 config PAGE_SIZE_16KB
2153 depends on !CPU_R3000 && !CPU_TX39XX
2155 Using 16kB page size will result in higher performance kernel at
2156 the price of higher memory consumption. This option is available on
2157 all non-R3000 family processors. Note that you will need a suitable
2158 Linux distribution to support this.
2160 config PAGE_SIZE_32KB
2162 depends on CPU_CAVIUM_OCTEON
2163 depends on !MIPS_VA_BITS_48
2165 Using 32kB page size will result in higher performance kernel at
2166 the price of higher memory consumption. This option is available
2167 only on cnMIPS cores. Note that you will need a suitable Linux
2168 distribution to support this.
2170 config PAGE_SIZE_64KB
2172 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2174 Using 64kB page size will result in higher performance kernel at
2175 the price of higher memory consumption. This option is available on
2176 all non-R3000 family processor. Not that at the time of this
2177 writing this option is still high experimental.
2181 config FORCE_MAX_ZONEORDER
2182 int "Maximum zone order"
2183 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2184 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2185 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2186 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2187 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2188 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2192 The kernel memory allocator divides physically contiguous memory
2193 blocks into "zones", where each zone is a power of two number of
2194 pages. This option selects the largest power of two that the kernel
2195 keeps in the memory allocator. If you need to allocate very large
2196 blocks of physically contiguous memory, then you may need to
2197 increase this value.
2199 This config option is actually maximum order plus one. For example,
2200 a value of 11 means that the largest free memory block is 2^10 pages.
2202 The page size is not necessarily 4KB. Keep this in mind
2203 when choosing a value for this option.
2208 config IP22_CPU_SCACHE
2213 # Support for a MIPS32 / MIPS64 style S-caches
2215 config MIPS_CPU_SCACHE
2219 config R5000_CPU_SCACHE
2223 config RM7000_CPU_SCACHE
2227 config SIBYTE_DMA_PAGEOPS
2228 bool "Use DMA to clear/copy pages"
2231 Instead of using the CPU to zero and copy pages, use a Data Mover
2232 channel. These DMA channels are otherwise unused by the standard
2233 SiByte Linux port. Seems to give a small performance benefit.
2235 config CPU_HAS_PREFETCH
2238 config CPU_GENERIC_DUMP_TLB
2240 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2244 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2246 config CPU_R4K_CACHE_TLB
2248 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2251 bool "MIPS MT SMP support (1 TC on each available VPE)"
2252 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2253 select CPU_MIPSR2_IRQ_VI
2254 select CPU_MIPSR2_IRQ_EI
2259 select SYS_SUPPORTS_SMP
2260 select SYS_SUPPORTS_SCHED_SMT
2261 select MIPS_PERF_SHARED_TC_COUNTERS
2263 This is a kernel model which is known as SMVP. This is supported
2264 on cores with the MT ASE and uses the available VPEs to implement
2265 virtual processors which supports SMP. This is equivalent to the
2266 Intel Hyperthreading feature. For further information go to
2267 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2273 bool "SMT (multithreading) scheduler support"
2274 depends on SYS_SUPPORTS_SCHED_SMT
2277 SMT scheduler support improves the CPU scheduler's decision making
2278 when dealing with MIPS MT enabled cores at a cost of slightly
2279 increased overhead in some places. If unsure say N here.
2281 config SYS_SUPPORTS_SCHED_SMT
2284 config SYS_SUPPORTS_MULTITHREADING
2287 config MIPS_MT_FPAFF
2288 bool "Dynamic FPU affinity for FP-intensive threads"
2290 depends on MIPS_MT_SMP
2292 config MIPSR2_TO_R6_EMULATOR
2293 bool "MIPS R2-to-R6 emulator"
2294 depends on CPU_MIPSR6
2297 Choose this option if you want to run non-R6 MIPS userland code.
2298 Even if you say 'Y' here, the emulator will still be disabled by
2299 default. You can enable it using the 'mipsr2emu' kernel option.
2300 The only reason this is a build-time option is to save ~14K from the
2303 config MIPS_VPE_LOADER
2304 bool "VPE loader support."
2305 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2306 select CPU_MIPSR2_IRQ_VI
2307 select CPU_MIPSR2_IRQ_EI
2310 Includes a loader for loading an elf relocatable object
2311 onto another VPE and running it.
2313 config MIPS_VPE_LOADER_CMP
2316 depends on MIPS_VPE_LOADER && MIPS_CMP
2318 config MIPS_VPE_LOADER_MT
2321 depends on MIPS_VPE_LOADER && !MIPS_CMP
2323 config MIPS_VPE_LOADER_TOM
2324 bool "Load VPE program into memory hidden from linux"
2325 depends on MIPS_VPE_LOADER
2328 The loader can use memory that is present but has been hidden from
2329 Linux using the kernel command line option "mem=xxMB". It's up to
2330 you to ensure the amount you put in the option and the space your
2331 program requires is less or equal to the amount physically present.
2333 config MIPS_VPE_APSP_API
2334 bool "Enable support for AP/SP API (RTLX)"
2335 depends on MIPS_VPE_LOADER
2338 config MIPS_VPE_APSP_API_CMP
2341 depends on MIPS_VPE_APSP_API && MIPS_CMP
2343 config MIPS_VPE_APSP_API_MT
2346 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2349 bool "MIPS CMP framework support (DEPRECATED)"
2350 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2353 select SYS_SUPPORTS_SMP
2354 select WEAK_ORDERING
2357 Select this if you are using a bootloader which implements the "CMP
2358 framework" protocol (ie. YAMON) and want your kernel to make use of
2359 its ability to start secondary CPUs.
2361 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2365 bool "MIPS Coherent Processing System support"
2366 depends on SYS_SUPPORTS_MIPS_CPS
2369 select MIPS_CPS_PM if HOTPLUG_CPU
2371 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2372 select SYS_SUPPORTS_HOTPLUG_CPU
2373 select SYS_SUPPORTS_SMP
2374 select WEAK_ORDERING
2376 Select this if you wish to run an SMP kernel across multiple cores
2377 within a MIPS Coherent Processing System. When this option is
2378 enabled the kernel will probe for other cores and boot them with
2379 no external assistance. It is safe to enable this when hardware
2380 support is unavailable.
2393 config SB1_PASS_2_WORKAROUNDS
2395 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2398 config SB1_PASS_2_1_WORKAROUNDS
2400 depends on CPU_SB1 && CPU_SB1_PASS_2
2404 config ARCH_PHYS_ADDR_T_64BIT
2408 prompt "SmartMIPS or microMIPS ASE support"
2410 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2413 Select this if you want neither microMIPS nor SmartMIPS support
2415 config CPU_HAS_SMARTMIPS
2416 depends on SYS_SUPPORTS_SMARTMIPS
2419 SmartMIPS is a extension of the MIPS32 architecture aimed at
2420 increased security at both hardware and software level for
2421 smartcards. Enabling this option will allow proper use of the
2422 SmartMIPS instructions by Linux applications. However a kernel with
2423 this option will not work on a MIPS core without SmartMIPS core. If
2424 you don't know you probably don't have SmartMIPS and should say N
2427 config CPU_MICROMIPS
2428 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2431 When this option is enabled the kernel will be built using the
2437 bool "Support for the MIPS SIMD Architecture"
2438 depends on CPU_SUPPORTS_MSA
2439 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2441 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2442 and a set of SIMD instructions to operate on them. When this option
2443 is enabled the kernel will support allocating & switching MSA
2444 vector register contexts. If you know that your kernel will only be
2445 running on CPUs which do not support MSA or that your userland will
2446 not be making use of it then you may wish to say N here to reduce
2447 the size & complexity of your kernel.
2461 # Vectored interrupt mode is an R2 feature
2463 config CPU_MIPSR2_IRQ_VI
2467 # Extended interrupt mode is an R2 feature
2469 config CPU_MIPSR2_IRQ_EI
2474 depends on !CPU_R3000
2480 config CPU_DADDI_WORKAROUNDS
2483 config CPU_R4000_WORKAROUNDS
2485 select CPU_R4400_WORKAROUNDS
2487 config CPU_R4400_WORKAROUNDS
2490 config MIPS_ASID_SHIFT
2492 default 6 if CPU_R3000 || CPU_TX39XX
2493 default 4 if CPU_R8000
2496 config MIPS_ASID_BITS
2498 default 0 if MIPS_ASID_BITS_VARIABLE
2499 default 6 if CPU_R3000 || CPU_TX39XX
2502 config MIPS_ASID_BITS_VARIABLE
2506 # - Highmem only makes sense for the 32-bit kernel.
2507 # - The current highmem code will only work properly on physically indexed
2508 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2509 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2510 # moment we protect the user and offer the highmem option only on machines
2511 # where it's known to be safe. This will not offer highmem on a few systems
2512 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2513 # indexed CPUs but we're playing safe.
2514 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2515 # know they might have memory configurations that could make use of highmem
2519 bool "High Memory Support"
2520 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2522 config CPU_SUPPORTS_HIGHMEM
2525 config SYS_SUPPORTS_HIGHMEM
2528 config SYS_SUPPORTS_SMARTMIPS
2531 config SYS_SUPPORTS_MICROMIPS
2534 config SYS_SUPPORTS_MIPS16
2537 This option must be set if a kernel might be executed on a MIPS16-
2538 enabled CPU even if MIPS16 is not actually being used. In other
2539 words, it makes the kernel MIPS16-tolerant.
2541 config CPU_SUPPORTS_MSA
2544 config ARCH_FLATMEM_ENABLE
2546 depends on !NUMA && !CPU_LOONGSON2
2548 config ARCH_DISCONTIGMEM_ENABLE
2550 default y if SGI_IP27
2552 Say Y to support efficient handling of discontiguous physical memory,
2553 for architectures which are either NUMA (Non-Uniform Memory Access)
2554 or have huge holes in the physical address space for other reasons.
2555 See <file:Documentation/vm/numa> for more.
2557 config ARCH_SPARSEMEM_ENABLE
2559 select SPARSEMEM_STATIC
2563 depends on SYS_SUPPORTS_NUMA
2565 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2566 Access). This option improves performance on systems with more
2567 than two nodes; on two node systems it is generally better to
2568 leave it disabled; on single node systems disable this option
2571 config SYS_SUPPORTS_NUMA
2575 bool "Relocatable kernel"
2576 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2578 This builds a kernel image that retains relocation information
2579 so it can be loaded someplace besides the default 1MB.
2580 The relocations make the kernel binary about 15% larger,
2581 but are discarded at runtime
2583 config RELOCATION_TABLE_SIZE
2584 hex "Relocation table size"
2585 depends on RELOCATABLE
2586 range 0x0 0x01000000
2587 default "0x00100000"
2589 A table of relocation data will be appended to the kernel binary
2590 and parsed at boot to fix up the relocated kernel.
2592 This option allows the amount of space reserved for the table to be
2593 adjusted, although the default of 1Mb should be ok in most cases.
2595 The build will fail and a valid size suggested if this is too small.
2597 If unsure, leave at the default value.
2599 config RANDOMIZE_BASE
2600 bool "Randomize the address of the kernel image"
2601 depends on RELOCATABLE
2603 Randomizes the physical and virtual address at which the
2604 kernel image is loaded, as a security feature that
2605 deters exploit attempts relying on knowledge of the location
2606 of kernel internals.
2608 Entropy is generated using any coprocessor 0 registers available.
2610 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2614 config RANDOMIZE_BASE_MAX_OFFSET
2615 hex "Maximum kASLR offset" if EXPERT
2616 depends on RANDOMIZE_BASE
2617 range 0x0 0x40000000 if EVA || 64BIT
2618 range 0x0 0x08000000
2619 default "0x01000000"
2621 When kASLR is active, this provides the maximum offset that will
2622 be applied to the kernel image. It should be set according to the
2623 amount of physical RAM available in the target system minus
2624 PHYSICAL_START and must be a power of 2.
2626 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2627 EVA or 64-bit. The default is 16Mb.
2632 depends on NEED_MULTIPLE_NODES
2634 config HW_PERF_EVENTS
2635 bool "Enable hardware performance counter support for perf events"
2636 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2639 Enable hardware performance counter support for perf events. If
2640 disabled, perf events will use software events only.
2645 bool "Multi-Processing support"
2646 depends on SYS_SUPPORTS_SMP
2648 This enables support for systems with more than one CPU. If you have
2649 a system with only one CPU, say N. If you have a system with more
2650 than one CPU, say Y.
2652 If you say N here, the kernel will run on uni- and multiprocessor
2653 machines, but will use only one CPU of a multiprocessor machine. If
2654 you say Y here, the kernel will run on many, but not all,
2655 uniprocessor machines. On a uniprocessor machine, the kernel
2656 will run faster if you say N here.
2658 People using multiprocessor machines who say Y here should also say
2659 Y to "Enhanced Real Time Clock Support", below.
2661 See also the SMP-HOWTO available at
2662 <http://www.tldp.org/docs.html#howto>.
2664 If you don't know what to do here, say N.
2667 bool "Support for hot-pluggable CPUs"
2668 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2670 Say Y here to allow turning CPUs off and on. CPUs can be
2671 controlled through /sys/devices/system/cpu.
2672 (Note: power management support will enable this option
2673 automatically on SMP systems. )
2674 Say N if you want to disable CPU hotplug.
2679 config SYS_SUPPORTS_MIPS_CMP
2682 config SYS_SUPPORTS_MIPS_CPS
2685 config SYS_SUPPORTS_SMP
2688 config NR_CPUS_DEFAULT_4
2691 config NR_CPUS_DEFAULT_8
2694 config NR_CPUS_DEFAULT_16
2697 config NR_CPUS_DEFAULT_32
2700 config NR_CPUS_DEFAULT_64
2704 int "Maximum number of CPUs (2-256)"
2707 default "4" if NR_CPUS_DEFAULT_4
2708 default "8" if NR_CPUS_DEFAULT_8
2709 default "16" if NR_CPUS_DEFAULT_16
2710 default "32" if NR_CPUS_DEFAULT_32
2711 default "64" if NR_CPUS_DEFAULT_64
2713 This allows you to specify the maximum number of CPUs which this
2714 kernel will support. The maximum supported value is 32 for 32-bit
2715 kernel and 64 for 64-bit kernels; the minimum value which makes
2716 sense is 1 for Qemu (useful only for kernel debugging purposes)
2717 and 2 for all others.
2719 This is purely to save memory - each supported CPU adds
2720 approximately eight kilobytes to the kernel image. For best
2721 performance should round up your number of processors to the next
2724 config MIPS_PERF_SHARED_TC_COUNTERS
2728 # Timer Interrupt Frequency Configuration
2732 prompt "Timer frequency"
2735 Allows the configuration of the timer frequency.
2738 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2741 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2744 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2747 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2750 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2763 config SYS_SUPPORTS_24HZ
2766 config SYS_SUPPORTS_48HZ
2769 config SYS_SUPPORTS_100HZ
2772 config SYS_SUPPORTS_128HZ
2775 config SYS_SUPPORTS_250HZ
2778 config SYS_SUPPORTS_256HZ
2781 config SYS_SUPPORTS_1000HZ
2784 config SYS_SUPPORTS_1024HZ
2787 config SYS_SUPPORTS_ARBIT_HZ
2789 default y if !SYS_SUPPORTS_24HZ && \
2790 !SYS_SUPPORTS_48HZ && \
2791 !SYS_SUPPORTS_100HZ && \
2792 !SYS_SUPPORTS_128HZ && \
2793 !SYS_SUPPORTS_250HZ && \
2794 !SYS_SUPPORTS_256HZ && \
2795 !SYS_SUPPORTS_1000HZ && \
2796 !SYS_SUPPORTS_1024HZ
2802 default 100 if HZ_100
2803 default 128 if HZ_128
2804 default 250 if HZ_250
2805 default 256 if HZ_256
2806 default 1000 if HZ_1000
2807 default 1024 if HZ_1024
2810 def_bool HIGH_RES_TIMERS
2812 source "kernel/Kconfig.preempt"
2815 bool "Kexec system call"
2818 kexec is a system call that implements the ability to shutdown your
2819 current kernel, and to start another kernel. It is like a reboot
2820 but it is independent of the system firmware. And like a reboot
2821 you can start any kernel with it, not just Linux.
2823 The name comes from the similarity to the exec system call.
2825 It is an ongoing process to be certain the hardware in a machine
2826 is properly shutdown, so do not be surprised if this code does not
2827 initially work for you. As of this writing the exact hardware
2828 interface is strongly in flux, so no good recommendation can be
2832 bool "Kernel crash dumps"
2834 Generate crash dump after being started by kexec.
2835 This should be normally only set in special crash dump kernels
2836 which are loaded in the main kernel with kexec-tools into
2837 a specially reserved region and then later executed after
2838 a crash by kdump/kexec. The crash dump kernel must be compiled
2839 to a memory address not used by the main kernel or firmware using
2842 config PHYSICAL_START
2843 hex "Physical address where the kernel is loaded"
2844 default "0xffffffff84000000" if 64BIT
2845 default "0x84000000" if 32BIT
2846 depends on CRASH_DUMP
2848 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2849 If you plan to use kernel for capturing the crash dump change
2850 this value to start of the reserved region (the "X" value as
2851 specified in the "crashkernel=YM@XM" command line boot parameter
2852 passed to the panic-ed kernel).
2855 bool "Enable seccomp to safely compute untrusted bytecode"
2859 This kernel feature is useful for number crunching applications
2860 that may need to compute untrusted bytecode during their
2861 execution. By using pipes or other transports made available to
2862 the process as file descriptors supporting the read/write
2863 syscalls, it's possible to isolate those applications in
2864 their own address space using seccomp. Once seccomp is
2865 enabled via /proc/<pid>/seccomp, it cannot be disabled
2866 and the task is only allowed to execute a few safe syscalls
2867 defined by each seccomp mode.
2869 If unsure, say Y. Only embedded should say N here.
2871 config MIPS_O32_FP64_SUPPORT
2872 bool "Support for O32 binaries using 64-bit FP"
2873 depends on 32BIT || MIPS32_O32
2875 When this is enabled, the kernel will support use of 64-bit floating
2876 point registers with binaries using the O32 ABI along with the
2877 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2878 32-bit MIPS systems this support is at the cost of increasing the
2879 size and complexity of the compiled FPU emulator. Thus if you are
2880 running a MIPS32 system and know that none of your userland binaries
2881 will require 64-bit floating point, you may wish to reduce the size
2882 of your kernel & potentially improve FP emulation performance by
2885 Although binutils currently supports use of this flag the details
2886 concerning its effect upon the O32 ABI in userland are still being
2887 worked on. In order to avoid userland becoming dependant upon current
2888 behaviour before the details have been finalised, this option should
2889 be considered experimental and only enabled by those working upon
2897 select OF_EARLY_FLATTREE
2904 prompt "Kernel appended dtb support" if USE_OF
2905 default MIPS_NO_APPENDED_DTB
2907 config MIPS_NO_APPENDED_DTB
2910 Do not enable appended dtb support.
2912 config MIPS_ELF_APPENDED_DTB
2915 With this option, the boot code will look for a device tree binary
2916 DTB) included in the vmlinux ELF section .appended_dtb. By default
2917 it is empty and the DTB can be appended using binutils command
2920 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2922 This is meant as a backward compatiblity convenience for those
2923 systems with a bootloader that can't be upgraded to accommodate
2924 the documented boot protocol using a device tree.
2926 config MIPS_RAW_APPENDED_DTB
2927 bool "vmlinux.bin or vmlinuz.bin"
2929 With this option, the boot code will look for a device tree binary
2930 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2931 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2933 This is meant as a backward compatibility convenience for those
2934 systems with a bootloader that can't be upgraded to accommodate
2935 the documented boot protocol using a device tree.
2937 Beware that there is very little in terms of protection against
2938 this option being confused by leftover garbage in memory that might
2939 look like a DTB header after a reboot if no actual DTB is appended
2940 to vmlinux.bin. Do not leave this option active in a production kernel
2941 if you don't intend to always append a DTB.
2945 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2946 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2949 default MIPS_CMDLINE_FROM_BOOTLOADER
2951 config MIPS_CMDLINE_FROM_DTB
2953 bool "Dtb kernel arguments if available"
2955 config MIPS_CMDLINE_DTB_EXTEND
2957 bool "Extend dtb kernel arguments with bootloader arguments"
2959 config MIPS_CMDLINE_FROM_BOOTLOADER
2960 bool "Bootloader kernel arguments if available"
2962 config MIPS_CMDLINE_BUILTIN_EXTEND
2963 depends on CMDLINE_BOOL
2964 bool "Extend builtin kernel arguments with bootloader arguments"
2969 config LOCKDEP_SUPPORT
2973 config STACKTRACE_SUPPORT
2977 config HAVE_LATENCYTOP_SUPPORT
2981 config PGTABLE_LEVELS
2983 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2984 default 3 if 64BIT && !PAGE_SIZE_64KB
2987 source "init/Kconfig"
2989 source "kernel/Kconfig.freezer"
2991 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2999 bool "Support for PCI controller"
3000 depends on HW_HAS_PCI
3003 Find out whether you have a PCI motherboard. PCI is the name of a
3004 bus system, i.e. the way the CPU talks to the other stuff inside
3005 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3009 bool "Support for HT-linked PCI"
3011 depends on CPU_LOONGSON3
3015 Loongson family machines use Hyper-Transport bus for inter-core
3016 connection and device connection. The PCI bus is a subordinate
3017 linked at HT. Choose Y for Loongson-3 based machines.
3022 config PCI_DOMAINS_GENERIC
3025 config PCI_DRIVERS_GENERIC
3026 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3029 config PCI_DRIVERS_LEGACY
3030 def_bool !PCI_DRIVERS_GENERIC
3031 select NO_GENERIC_PCI_IOPORT_MAP
3033 source "drivers/pci/Kconfig"
3036 # ISA support is now enabled via select. Too many systems still have the one
3037 # or other ISA chip on the board that users don't know about so don't expect
3038 # users to choose the right thing ...
3045 depends on HW_HAS_EISA
3047 select GENERIC_ISA_DMA
3049 The Extended Industry Standard Architecture (EISA) bus was
3050 developed as an open alternative to the IBM MicroChannel bus.
3052 The EISA bus provided some of the features of the IBM MicroChannel
3053 bus while maintaining backward compatibility with cards made for
3054 the older ISA bus. The EISA bus saw limited use between 1988 and
3055 1995 when it was made obsolete by the PCI bus.
3057 Say Y here if you are building a kernel for an EISA-based machine.
3061 source "drivers/eisa/Kconfig"
3064 bool "TURBOchannel support"
3065 depends on MACH_DECSTATION
3067 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3068 processors. TURBOchannel programming specifications are available
3070 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3072 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3073 Linux driver support status is documented at:
3074 <http://www.linux-mips.org/wiki/DECstation>
3080 config ARCH_MMAP_RND_BITS_MIN
3084 config ARCH_MMAP_RND_BITS_MAX
3088 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3091 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3098 select MIPS_EXTERNAL_TIMER
3106 source "drivers/pcmcia/Kconfig"
3109 tristate "RapidIO support"
3113 If you say Y here, the kernel will include drivers and
3114 infrastructure code to support RapidIO interconnect devices.
3116 source "drivers/rapidio/Kconfig"
3120 menu "Executable file formats"
3122 source "fs/Kconfig.binfmt"
3127 config MIPS32_COMPAT
3133 config SYSVIPC_COMPAT
3137 bool "Kernel support for o32 binaries"
3139 select ARCH_WANT_OLD_COMPAT_IPC
3141 select MIPS32_COMPAT
3142 select SYSVIPC_COMPAT if SYSVIPC
3144 Select this option if you want to run o32 binaries. These are pure
3145 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3146 existing binaries are in this format.
3151 bool "Kernel support for n32 binaries"
3154 select MIPS32_COMPAT
3155 select SYSVIPC_COMPAT if SYSVIPC
3157 Select this option if you want to run n32 binaries. These are
3158 64-bit binaries using 32-bit quantities for addressing and certain
3159 data that would normally be 64-bit. They are used in special
3166 default y if MIPS32_O32 || MIPS32_N32
3171 menu "Power management options"
3173 config ARCH_HIBERNATION_POSSIBLE
3175 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3177 config ARCH_SUSPEND_POSSIBLE
3179 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3181 source "kernel/power/Kconfig"
3185 config MIPS_EXTERNAL_TIMER
3188 menu "CPU Power Management"
3190 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3191 source "drivers/cpufreq/Kconfig"
3194 source "drivers/cpuidle/Kconfig"
3198 source "net/Kconfig"
3200 source "drivers/Kconfig"
3202 source "drivers/firmware/Kconfig"
3206 source "arch/mips/Kconfig.debug"
3208 source "security/Kconfig"
3210 source "crypto/Kconfig"
3212 source "lib/Kconfig"
3214 source "arch/mips/kvm/Kconfig"